AP sources: Emanuel leaving White House on Friday

Heavy turnover within and around the Administration usually suggests upheaval and cross-currents behind the scenes.

In Washington, Emanuel's departure, though expected by the political world for days now, is still an unquestioned loss for Obama. The president has counted on Emanuel's intensity, discipline and congressional relationships to keep the White House focused and aggressive. The job comes with nearly unrivaled pressure and power.

Source: news.yahoo.com